Blower Motor wiring issues. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

timzrides · 03-01-2011, 10:45 PM

Look at the picture. When I started my rebuild, I didn't pay attention, why would this hole be so big for the wire. Was something supposed to go there? Thanks

**kwmech** · 03-01-2011, 11:14 PM

That's a head scratcher. Did the truck have aftermarket ac?

60ratrod · 03-01-2011, 11:42 PM

that should have been a bulkhead connector/wire grommet by the looks of it

timzrides · 03-02-2011, 07:49 PM

No aftermarket ac and same wiring with the truck????

Frkypunk70 · 03-02-2011, 08:09 PM

Actually that is a field mouse access hole. Almost a requirement on these year trucks.

Sorry could'nt resist.

dave2953 · 03-02-2011, 08:28 PM

Sorry this picture sucks, but at least you can see the wire on my firewall in the pic. It seems there is a grommet that fills that dead space around the wire. Hope this helps.

**LockDoc** · 03-02-2011, 09:30 PM

-
Yes there is a grommet but they are usually about 1/2" or 3/4" in diameter...

LockDoc

dave2953 · 03-02-2011, 09:50 PM

His hole did look a little ginormous to me, but I thought maybe it was the picture causing it to look differently.

dmack91 · 03-02-2011, 11:08 PM

Just looked at mine and it is only the 1/2-3/4" rubber grommet around the wire.

If you measure it, someone can probably measure some of the other firewall holes on the driver's side (speedo, throttle, etc) and see if you can get one of the factory one's to fit.

Sammy · 03-02-2011, 11:16 PM

That hole looks as big as a fist..

jc67cst · 03-02-2011, 11:39 PM

Is it an A/C truck? or just heat? Will try to post a pic of mine I am taking apart now. From the looks of it on my pic a heater hose is running there if that is between the a/c box and blower motor.

jc67cst · 03-02-2011, 11:44 PM

03-01-2011, 10:45 PM	#1
timzrides Registered User Join Date: Jan 2007 Location: Illinois Posts: 351	Blower Motor wiring issues. Look at the picture. When I started my rebuild, I didn't pay attention, why would this hole be so big for the wire. Was something supposed to go there? Thanks Attached Images

03-01-2011, 11:14 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,630	Re: Blower Motor wiring issues. That's a head scratcher. Did the truck have aftermarket ac?

03-01-2011, 11:42 PM	#3
60ratrod yes, i do Join Date: Jun 2007 Location: Spokane, wa Posts: 2,734	Re: Blower Motor wiring issues. that should have been a bulkhead connector/wire grommet by the looks of it __________________ ERROR 404....... SNAPPY COMEBACK NOT FOUND _______________________________________________________________________________________________ -60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination" -07 gmt900 silverado 1500 lt xcab z71, granite blue -81 suzuki gs650g "shelah"- current project -81 kz1000m1 csr "sarge" -next project (just beautification) -07 kawasaki vulcan classic vn900

03-02-2011, 07:49 PM	#4
timzrides Registered User Join Date: Jan 2007 Location: Illinois Posts: 351	Re: Blower Motor wiring issues. No aftermarket ac and same wiring with the truck????

03-02-2011, 08:09 PM	#5
Frkypunk70 Registered User Join Date: Mar 2010 Location: Scranton,Pa Posts: 423	Re: Blower Motor wiring issues. Actually that is a field mouse access hole. Almost a requirement on these year trucks. Sorry could'nt resist. __________________ "When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car. "

03-02-2011, 08:28 PM	#6
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Blower Motor wiring issues. Sorry this picture sucks, but at least you can see the wire on my firewall in the pic. It seems there is a grommet that fills that dead space around the wire. Hope this helps. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 03-02-2011 at 08:35 PM.

03-02-2011, 09:30 PM	#7
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,774	Re: Blower Motor wiring issues. - Yes there is a grommet but they are usually about 1/2" or 3/4" in diameter... LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

03-02-2011, 09:50 PM	#8
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Blower Motor wiring issues. His hole did look a little ginormous to me, but I thought maybe it was the picture causing it to look differently. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

03-02-2011, 11:08 PM	#9
dmack91 Registered User Join Date: Jan 2011 Location: Redmond, OR Posts: 763	Re: Blower Motor wiring issues. Just looked at mine and it is only the 1/2-3/4" rubber grommet around the wire. If you measure it, someone can probably measure some of the other firewall holes on the driver's side (speedo, throttle, etc) and see if you can get one of the factory one's to fit. __________________ 68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress

03-02-2011, 11:16 PM	#10
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Blower Motor wiring issues. That hole looks as big as a fist.. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

03-02-2011, 11:39 PM	#11
jc67cst Registered User Join Date: Jan 2011 Location: New Braunfels, TX Posts: 24	Re: Blower Motor wiring issues. Is it an A/C truck? or just heat? Will try to post a pic of mine I am taking apart now. From the looks of it on my pic a heater hose is running there if that is between the a/c box and blower motor. __________________ 1972 C10 SWB Cheyenne- Tubbed, 4link, 6.0, etc. 1970 C10 SWB - Work in slow progress 2013 GMC 2500 Denali - Deleted

03-02-2011, 11:44 PM	#12
jc67cst Registered User Join Date: Jan 2011 Location: New Braunfels, TX Posts: 24	Re: Blower Motor wiring issues. __________________ 1972 C10 SWB Cheyenne- Tubbed, 4link, 6.0, etc. 1970 C10 SWB - Work in slow progress 2013 GMC 2500 Denali - Deleted



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